摘要
本文概述了南北地震带南段的水文地质条件和水文地球化学特征,并编绘了B、F、Li、Sr等微量元素的异常图,分析了水文地球化学与地震的关系。认为(1)构造对地震、地下热水和微量元素的高值区均具有控制作用,它们在空间分布上具有较明显的一致性;(2)高中温热水区(尤其是高中温热泉密集带),常常是地震活动的强烈区,但强震区不一定有高中温热泉密集;(3)在地震孕育过程中,温泉和热水井中的水温、流量和水化学成分均可发生变化。温泉热水中的水化学成分,特别是微量元素变化是地震预报的前兆信息之一。
This paper outlines hydrogeologic condition and hydrogeochemical feature in the Southern part of NorthSouth Earthquake Belt in China and maps abnormal map of microelements of B,F,Li and Sr. At the same time,the relationship between hydrogeochemical feature and earthquake is analyzed. The research results indicates:(1)Earthquake,geothermal heat and microelement abnormal areas are controlled by tectonic.Their distributions in space are obviously same.(2)Highmiddle temperature water areas,especially the areas of highmiddle heat spring,are always the strong regions of earthquake activity.But the strong earthquake area does not always occur in highmiddle heat spring.(3)During the process of earthquake formation water temperature,flow quantity and hydrogeochemical component in geothermal wells and hot springs may be changed. The change of hydrochemical components,especially microelement in hot springs may be one of information to forecast earthquake.
出处
《地质力学学报》
CSCD
2003年第1期21-30,共10页
Journal of Geomechanics
